package com.itheima.controller;

import com.itheima.domain.Book;
import com.itheima.service.BookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.ArrayList;
import java.util.List;

// TODO 3.1 设置当前控制器为REST风格的控制器类，开发对应的CRUD功能，并调用对应的业务层接口
@RestController
@RequestMapping("/books")
public class BookController {
    @Autowired
    private BookService bookService;

    //json参数
    @PostMapping
    public Result save(@RequestBody Book book){
        boolean flag = bookService.save(book);
        return new Result(flag?Code.SAVE_OK:Code.SAVE_ERR,flag);
    }

    //路径参数
    @DeleteMapping("/{id}")
    public Result deleteById(@PathVariable Integer id){
        boolean flag = bookService.delete(id);
        return new Result(flag?Code.DELETE_OK:Code.DELETE_ERR,flag);
    }

    //json参数
    @PutMapping
    public Result update(@RequestBody Book book){
        boolean flag = bookService.update(book);
        return new Result(flag?Code.UPDATE_OK:Code.UPDATE_ERR,flag);
    }

    //路径参数
    @GetMapping("/{id}")
    public Result getById(@PathVariable Integer id){
        Book book = bookService.getById(id);
        Integer code=book!=null?Code.GET_OK:Code.GET_ERR;
        String msg=book!=null?"":"数据查询失败,请检查后重试!";
        return new Result(code,book,msg);
    }

    @GetMapping
    public Result getAll(){
        List<Book> bookList = bookService.getAll();
        Integer code = bookList != null ? Code.GET_OK : Code.GET_ERR;
        String msg = bookList != null ? "" : "数据查询失败，请检查后重试！";
        return new Result(code,bookList,msg);
    }

}














